4 cores of 2 pairs telephone cable 1.Telephone cable 2.Copper 0.4,0.5,0.65,0.7mm ... is optional 3.UL CE ROSH compliant 4 cores of 2 ... pairs telephone cable Telephone cable 4CDescription: Indoor use, parallel, 2-coreStandards: ISO/IEC 11801, ANSI/ ... -J 4X0.51/0.50.200.653.695.0Note: HBYV 2-core parallel, HBYV-J twisted pair. UL, CE, ROHS ...